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Tractor · 1980Unverified

International Harvester 3788

Name: International Harvester 3788
Brand: International Harvester

International Harvester 3788 — 30 2+2 Series · 171 hp. Reference specifications; pending source verification.

The International Harvester 3788 is a tractor model with a rated power of 171 hp, placing it at the higher end of its class. It was produced during the 1980-81 period. The tractor features a 6-cylinder turbocharged diesel liquid-cooled engine, paired with four-wheel drive and a hydrostatic transmission. Its listed operating weight ranges from 16520 to 18620 pounds.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

171 hp

Max power

105.9 kW

Weight

16520 to 18620 pounds

Catalogue coverage

Variants represented

Richest spec table

76 rows

Recorded power

171 hp

Transmissions

12-speed two-range power shift

Production years

1980-1981

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerInternational HarvesterReference

Four-wheel Drive (4WD) tractorReference

Total built2,496Reference

Original price was $57,000 in 1981Reference

Four-wheel driveReference

Steeringhydrostatic powerReference

Hydraulic wet disc brakesReference

Cab standardReference

Engine

International Harvester 7.6L 6-cyl dieselReference

Fuel tank340.7 LReference

Drawbar (claimed)108.9 kWReference

Drawbar (tested)105.9 kWReference

International Harvester DT-466BReference

turbocharged dieselReference

6-cylinderReference

liquid-cooledReference

Displacement7.6 LReference

Bore/Stroke109 x 136 mmReference

Rated RPM2500Reference

Idle RPM780-2750Reference

Starter volts12Reference

Oil capacity18.9 LReference

Coolant capacity32.2 LReference

Power at rated engine speed127.2 kWReference

Max power105.9 kWReference

Transmission

12-speed two-range power shiftReference

TransmissionTorque AmplifierReference

Typetwo-range power shiftReference

Gears12 forward and 6 reverseReference

Clutch356mm hydraulic dry discReference

PTO & Hydraulics

PTO (claimed)127.2 kWReference

PTO (tested)127.2 kWReference

Typeclosed centerReference

Valves2Reference

Pump flow45.4 lpmReference

Rear TypeIIIReference

Rear PTOindependentReference

Rear PTO Type1000Reference

Engine RPM1000@2100Reference

Power at rated PTO speed124.1 kWReference

Dimensions

Wheelbase279 cmReference

Weight16520 to 18620 poundsReference

Front tire18.4-38Reference

Rear tire18.4-38Reference

Ag front18.4-38Reference

Ag rear18.4-38Reference

Length579 cmReference

Width258 cmReference

Height (cab)294 cmReference

Clearance (front axle)58 cmReference

Clearance (rear axle)67 cmReference

Front axle82 mmReference

Bar rear axle82 mmReference

Shipping7493 kgReference

Operating8446 kgReference

3788 Serial Numbers

Location:Right side of tractor frame, by rear axle.Reference

19808801Reference

198110866Reference

FAQ: How to read a serial number table.Reference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Charging amps72Reference

Charging amps100Reference

Batteries2Reference

Battery volts12Reference

Capacities

Max capacity10659 kgReference

Test results

Diesel 12-speed 4WDNovember 5 - 17, 1980Link: Nebraska Tractor Test 1377 fileReference

PTO performanceReference

Fuel use41.3 l/hourReference

Fuel use36.7 l/hourReference

Drawbar performanceReference

Fuel use40.5 l/hourReference

Gear 3-Low-Direct used for power test.Reference

Max pull8649 kgReference

Gear 1-Low-Direct used for pull test.Reference

Speeds

With 18.4-38 rear tires.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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